/usr/share/gauche-0.9/site/lib/ is in gauche-gtk 0.6~pre1+git20121223-1.
This file is owned by root:root, with mode 0o755.
..
/usr/share/gauche-0.9/site/lib/.packages/
/usr/share/gauche-0.9/site/lib/.packages/Gauche-gtk2.gpd
/usr/share/gauche-0.9/site/lib/gtk/
/usr/share/gauche-0.9/site/lib/gtk.scm
/usr/share/gauche-0.9/site/lib/gtk/error-dialog.scm
/usr/share/gauche-0.9/site/lib/gtk/gdkkeysyms.scm
/usr/share/gauche-0.9/site/lib/gtk/glgd.scm
/usr/share/gauche-0.9/site/lib/gtk/gtkaux.scm
/usr/share/gauche-0.9/site/lib/gtk/gtkgl.scm
/usr/share/gauche-0.9/site/lib/gtk/listener.scm
/usr/share/gauche-0.9/site/lib/h2s/
/usr/share/gauche-0.9/site/lib/h2s/emit.scm
/usr/share/gauche-0.9/site/lib/h2s/fixup.scm
/usr/share/gauche-0.9/site/lib/h2s/gtk-types-for-emit.scm
/usr/share/gauche-0.9/site/lib/h2s/gtk-types-for-fixup.scm
/usr/share/gauche-0.9/site/lib/h2s/gtk-types.scm
/usr/share/gauche-0.9/site/lib/h2s/lookup.scm
/usr/share/gauche-0.9/site/lib/h2s/objects.scm
/usr/share/gauche-0.9/site/lib/h2s/parse.scm
/usr/share/gauche-0.9/site/lib/h2s/program.scm
/usr/share/gauche-0.9/site/lib/h2s/top.scm
/usr/share/gauche-0.9/site/lib/h2s/track.scm
/usr/share/gauche-0.9/site/lib/h2s/utils.scm